Displaying images in oracle forms

I am trying to dynamically display bmp files in an image item. The problem is that the image does not show up if the size of the image item is smaller than the actual image size and also no error is generated. I have tried setting sizing=Adjust and that does not work. Infact if i set sizing =adjust forms never displays the image file.
help..................

You are right i just meant to say i am using the read_image_file builtin when i said dynamic. The problem seems to be with displaying the image if sizing is set =adjust. Infact the same application was working with forms 4.5 but is not working anymore after i generated it in forms 60

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